213304244 has 6 divisors (see below), whose sum is σ = 373282434. Its totient is φ = 106652120.

The previous prime is 213304243. The next prime is 213304249. The reversal of 213304244 is 442403312.

It can be written as a sum of positive squares in only one way, i.e., 183927844 + 29376400 = 13562^2 + 5420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213304243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26663027 + ... + 26663034.

It is an arithmetic number, because the mean of its divisors is an integer number (62213739).

Almost surely, 2^213304244 is an apocalyptic number.

It is an amenable number.

213304244 is a deficient number, since it is larger than the sum of its proper divisors (159978190).

213304244 is a wasteful number, since it uses less digits than its factorization.

213304244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53326065 (or 53326063 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 213304244 is about 14604.9390276030. The cubic root of 213304244 is about 597.4934730822.

Adding to 213304244 its reverse (442403312), we get a palindrome (655707556).

The spelling of 213304244 in words is "two hundred thirteen million, three hundred four thousand, two hundred forty-four".